Solve 3*x - 5*z - 30 = 6*x, -13 = 2*x + z for x.

-5

Solve 20 = 5*r + 2*j + j, -5*r + 5*j = -20 for r.

4

Solve 4*i - 10 = -3*p + 10, i - 2*p = 5 for i.

5

Solve -5*t = -5*k + 50, 7*t = k + 5*t - 15 for k.

5

Solve -4*x + 2*y + 16 = 0, 0*x + 5*x - 5 = -5*y for x.

3

Solve -3*q + 2 = -4*q - s, -2*q = 5*s + 19 for q.

3

Solve -5*l = 20, -4*r + 5*l + 24 = l for r.

2

Solve -18 = 2*v + 4*h, -3*v + 2*v = -4*h - 21 for v.

1

Solve 16 = 2*x - 5*v, x - 2*v - 14 = 2*v for x.

-2

Solve 2*w + 13 = 5*r, 5*w + 0*r = -r - 19 for w.

-4